source: experimental/distortionNG/shaderIntensityMapVis.frag @ 365

uniform sampler2DRect sceneTexture;
uniform sampler2DRect intensityMapTexture;
varying vec2 texcoord_scene;
varying vec2 texcoord_intensityMap;

void main(void)
{
        gl_FragColor = texture2DRect(intensityMapTexture, gl_FragCoord);
}